(noun) an event where so much alcohol is consumed that the following days will resemble the "end of days". Much like a hangover but to an extreme degree and experienced by many. Generally includes,but not limited to, horrible headaches and nausea, an inability to eat solid food and multiple apology/"what happened" phone calls. Often associated with weddings, birthday, Irish wakes, all major drinking holidays, but usually requires of two or more such events to truly qualify.